With the future of online gaming looking profitable, it is important for each website to offer enough of a variety to maintain their base of regular players. If you do not provide the players, what they want you will lose those players to another website. Even games equivalent to those you play in live casinos such as Triple 7s need upgraded or replaced on a regular basis in order to keep the players' interest peaked.
With the number of people owning home computers still increasing, there is likely to also be an increase in the number of people playing the online casinos. Although some people use their computers for work and research, others see them as nothing more than a limitless flow of computer games. Whether its lottery, casino or poker games the numbers are increasing dramatically and will probably continue to do so well into the 21st century.